Duk-Sun Kim

Effects of 7,8-dihydro-8-oxo-deoxyguanosine on antigen challenge in ovalbumin-sensitized mice may be mediated by suppression of Rac.

Background and purpose:  Earlier we reported that 7,8‐dihydro‐8‐oxo‐deoxyguanosine (8‐oxo‐dG), an oxidatively modified guanine nucleoside, exerted anti‐inflammatory activity through inactivation of the GTP binding protein, Rac. In the present study, the effects of 8‐oxo‐dG were investigated on responses to antigen challenge in sensitized mice, as Rac is also involved at several steps of the immune process including antigen‐induced release of mediators from mast cells.

Applications on the Image Processing Using Singular Value Preservers

Singular values hold many informations on the data of a given image. And singular values are preserved by unitary (U, V)-operators. In this process singular value preserver are used on the recognition of image patterns. In this paper, we show applications on the properties of singular value preserver in the image processing and pattern recognition for given image datas.